Silky pole saws have a clamp that locks the extended poles in place. Over time and constant use, this clamp can become less efficient. Replacing the internal spacer and lever will extend the life of your pole saw and keep the extension poles firmly in place during use.
The small cost of these parts is a great investment in the long-term life of your pole saw.
11. Silky LongBoy Pole Saw Clamp Lever